(19)

(11)

EP 1 481 264 A1

(12)

(43) Date of publication: 01.12.2004 Bulletin 2004/49 (21) Application number: 02806875.7 (22) Date of filing: 20.12.2002

(51) International Patent Classification (IPC)7: G01T 1/24, G01T 1/20 (86) International application number: PCT/US2002/041000 (87) International publication number: WO 2003/071307 (28.08.2003 Gazette 2003/35)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR Designated Extension States: AL LT LV MK RO (30) Priority: 15.02.2002 US 78056 (71) Applicant: Varian Medical Systems Technologies, Inc. Palo Alto, CA 94304-1038 (US)	(72) Inventor: MOLLOV, Ivan, P. Cupertino, CA 95014 (US) (74) Representative: Dixon, Philip Matthew et al Frank B. Dehn & Co.179 Queen Victoria Street London EC4V 4EL London EC4V 4EL (GB)